WO2019192049A1 - Drive compensation circuit of oled display unit, oled display circuit and oled display - Google Patents

Drive compensation circuit of oled display unit, oled display circuit and oled display Download PDF

Info

Publication number
WO2019192049A1
WO2019192049A1 PCT/CN2018/085905 CN2018085905W WO2019192049A1 WO 2019192049 A1 WO2019192049 A1 WO 2019192049A1 CN 2018085905 W CN2018085905 W CN 2018085905W WO 2019192049 A1 WO2019192049 A1 WO 2019192049A1
Authority
WO
WIPO (PCT)
Prior art keywords
switching
oled display
pmos transistor
compensation circuit
voltage
Prior art date
Application number
PCT/CN2018/085905
Other languages
French (fr)
Chinese (zh)
Inventor
陈小龙
解红军
Original Assignee
深圳市华星光电半导体显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市华星光电半导体显示技术有限公司 filed Critical 深圳市华星光电半导体显示技术有限公司
Priority to US16/078,045 priority Critical patent/US10657897B2/en
Publication of WO2019192049A1 publication Critical patent/WO2019192049A1/en

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/045—Compensation of drifts in the characteristics of light emitting or modulating elements

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to an OLED display unit driving compensation circuit, an OLED display circuit, and an OLED display.
  • the threshold voltage of the driving thin film transistor of each pixel in the panel is different. Therefore, even if the driving voltage is applied to the driving thin film transistors of the respective pixels, the current flowing into the organic light emitting diode OLED is inconsistent, resulting in difficulty in achieving uniformity of display image quality.
  • the thin film transistor material is aged and mutated, and the threshold voltage of the driving thin film transistor is drifted.
  • the degree of aging of the thin film transistor materials in the board is different, which causes the threshold voltage drift of each driving thin film transistor in the panel to be different, which may also cause unevenness of the panel display.
  • the driving time progresses, the aging of the thin film transistor material becomes more serious. Even if the driving voltage is the same, the illuminating current flowing through the organic light emitting diode is likely to be different, resulting in uneven brightness.
  • An object of embodiments of the present invention is to provide an OLED display unit driving compensation circuit, an OLED display circuit, and an OLED display to make the OLED display display more uniform.
  • An embodiment of the present invention provides an OLED display unit driving compensation circuit, where the OLED display unit includes M rows and N columns of pixel units, wherein each column of pixel units is connected to a data line, and each row of pixel units is connected to a scan line, wherein
  • the compensation circuit includes:
  • N first switching tubes, wherein the input end of each of the first switching tubes is connected to a voltage input end of each of the pixel units of the column, wherein N is a positive integer;
  • N second switching tubes an output end of each of the second switching tubes being connected to a voltage input end of each of the pixel units of the column;
  • Each of the N sensing units is connected to the output ends of the first switching tubes in a one-to-one correspondence, and the sensing unit is configured to collect the sensing mode of the voltage input end of each of the pixel units.
  • calculation processing unit is respectively connected to the N sensing units, the calculation processing unit is connected to the data line to collect a data voltage, and the calculation processing unit is configured to use the data voltage according to the data Current information, calculating a mapping relationship between the data voltage and the current information, and calculating a data compensation voltage of the display phase according to the second current information and the mapping relationship;
  • the sensing unit includes a first PMOS transistor and a second PMOS transistor, and a source of the first PMOS transistor is connected to an output end of the corresponding first switching transistor, a gate of the first PMOS transistor and the first PMOS transistor a source of the tube is connected, a gate of the second PMOS transistor is connected to a gate of the first PMOS transistor, and a drain of the first PMOS transistor and the second PMOS transistor are respectively connected to a power supply end, and the second a source of the PMOS transistor is coupled to the computing processing unit;
  • the calculation processing unit includes a gating module, an analog-to-digital converter, and a processing chip, wherein the input ends of the gating modules are respectively connected to the sensing unit, and an output end of the gating module is connected to the analog-to-digital converter
  • the analog to digital converter is coupled to the processing chip.
  • the plurality of first switching tubes are all in an on state, and the plurality of second switching tubes are in an off state, the gating
  • the module sequentially turns on with each of the sensing units in turn with the analog to digital converter, the analog to digital converter converts the current information into a digital signal, and the processing chip calculates a voltage compensation value and current according to the digital signal.
  • the mapping of values in the sensing mode, the plurality of first switching tubes are all in an on state, and the plurality of second switching tubes are in an off state, the gating The module sequentially turns on with each of the sensing units in turn with the analog to digital converter, the analog to digital converter converts the current information into a digital signal, and the processing chip calculates a voltage compensation value and current according to the digital signal. The mapping of values.
  • the OLED display unit driving compensation circuit of the present invention in the display mode, the plurality of first switching tubes are all in an off state, and the plurality of second switching tubes are in an on state, the compensation unit The compensated voltage is output to the power supply input.
  • the first switching tube and the second switching tube are both PMOS tubes.
  • the first switching tube and the second switching tube are both NMOS tubes.
  • the method further includes a gate control unit, and the gate control unit is connected to the gates of the first switch tube and the second switch tube to control the The switching states of the first switch tube and the second switch tube are described.
  • the embodiment of the present invention further provides an OLED display unit driving compensation circuit, wherein the OLED display unit includes M rows and N columns of pixel units, wherein each column of pixel units is connected to a data line, and each row of pixel units is connected to a scan line.
  • the compensation circuit includes:
  • N first switching tubes, wherein the input end of each of the first switching tubes is connected to a voltage input end of each of the pixel units of the column, wherein N is a positive integer;
  • N second switching tubes an output end of each of the second switching tubes being connected to a voltage input end of each of the pixel units of the column;
  • Each of the N sensing units is connected to the output ends of the first switching tubes in a one-to-one correspondence, and the sensing unit is configured to collect the sensing mode of the voltage input end of each of the pixel units.
  • calculation processing unit is respectively connected to the N sensing units, the calculation processing unit is connected to the data line to collect an initial data voltage, and the calculation processing unit is configured to perform according to the initial data voltage and Calculating a mapping relationship between the data voltage and the current information, and calculating a data compensation voltage in a display phase according to the second current information and the mapping relationship;
  • the switching states of the first switching transistor and the second switching transistor connected to the pixel unit of the same column are opposite.
  • the sensing unit includes a first PMOS transistor and a second PMOS transistor, and a source of the first PMOS transistor is connected to an output end of the corresponding first switching transistor.
  • a gate of the first PMOS transistor is connected to a source of the first PMOS transistor
  • a gate of the second PMOS transistor is connected to a gate of the first PMOS transistor
  • the first PMOS transistor and the second The drains of the PMOS transistors are respectively connected to the power supply terminals, and the sources of the second PMOS transistors are connected to the calculation processing unit.
  • the calculation processing unit includes a gating module, an analog-to-digital converter, and a processing chip, and the input ends of the gating modules are respectively connected to the sensing unit, An output of the gating module is coupled to the analog to digital converter, the analog to digital converter being coupled to the processing chip.
  • the plurality of first switching tubes are all in an on state, and the plurality of second switching tubes are in an off state, the gating
  • the module sequentially turns on with each of the sensing units in turn with the analog to digital converter, the analog to digital converter converts the current information into a digital signal, and the processing chip calculates a voltage compensation value and current according to the digital signal.
  • the mapping of values in the sensing mode, the plurality of first switching tubes are all in an on state, and the plurality of second switching tubes are in an off state, the gating The module sequentially turns on with each of the sensing units in turn with the analog to digital converter, the analog to digital converter converts the current information into a digital signal, and the processing chip calculates a voltage compensation value and current according to the digital signal. The mapping of values.
  • the OLED display unit driving compensation circuit of the present invention in the display mode, the plurality of first switching tubes are all in an off state, and the plurality of second switching tubes are in an on state, the compensation unit The compensated voltage is output to the power supply input.
  • the first switching tube and the second switching tube are both PMOS tubes.
  • the first switching tube and the second switching tube are both NMOS tubes.
  • the method further includes a gate control unit, and the gate control unit is connected to the gates of the first switch tube and the second switch tube to control the The switching states of the first switch tube and the second switch tube are described.
  • An OLED display circuit comprising an OLED display unit driving compensation circuit, wherein the OLED display unit comprises M rows and N columns of pixel units, wherein each column of pixel units is connected to a data line, and each row of pixel units is connected to a scan line.
  • the compensation circuit comprises:
  • N first switching tubes, wherein the input end of each of the first switching tubes is connected to a voltage input end of each of the pixel units of the column, wherein N is a positive integer;
  • N second switching tubes an output end of each of the second switching tubes being connected to a voltage input end of each of the pixel units of the column;
  • Each of the N sensing units is connected to the output ends of the first switching tubes in a one-to-one correspondence, and the sensing unit is configured to collect the sensing mode of the voltage input end of each of the pixel units.
  • calculation processing unit is respectively connected to the N sensing units, the calculation processing unit is connected to the data line to collect a data voltage, and the calculation processing unit is configured to use the data voltage according to the data Current information, calculating a mapping relationship between the data voltage and the current information, and calculating a data compensation voltage of the display phase according to the second current information and the mapping relationship;
  • the switching states of the first switching transistor and the second switching transistor connected to the pixel unit of the same column are opposite.
  • the sensing unit includes a first PMOS transistor and a second PMOS transistor, and a source of the first PMOS transistor is connected to an output end of the corresponding first switching transistor, the first PMOS transistor a gate is connected to a source of the first PMOS transistor, a gate of the second PMOS transistor is connected to a gate of the first PMOS transistor, and a drain of the first PMOS transistor and the second PMOS transistor are respectively Connected to the power supply terminal, the source of the second PMOS transistor is connected to the calculation processing unit.
  • the calculation processing unit includes a gating module, an analog-to-digital converter, and a processing chip, and the input ends of the gating modules are respectively connected to the sensing unit, and the output of the gating module
  • the terminal is connected to the analog to digital converter, and the analog to digital converter is connected to the processing chip.
  • the plurality of first switching tubes are all in an on state
  • the plurality of second switching tubes are in an off state
  • the gating modules are sequentially and in each
  • the sensing unit is sequentially connected to the analog-to-digital converter
  • the analog-to-digital converter converts the current information into a digital signal
  • the processing chip calculates a mapping relationship between the voltage compensation value and the current value according to the digital signal.
  • the plurality of first switching tubes are all in an off state
  • the plurality of second switching tubes are all in an on state
  • the compensation unit outputs the compensated voltage To the power supply input.
  • the first switching transistor and the second switching transistor are both PMOS transistors.
  • An OLED display comprising the OLED display unit drive compensation circuit described above.
  • the OLED display unit driving compensation circuit, the OLED display circuit and the OLED display provided by the invention can calculate the mapping relationship between the voltage compensation value and the input current value for outputting to each pixel unit, and can compensate for each pixel unit. Can improve the uniformity of OLED displays.
  • FIG. 1 is a schematic structural diagram of an OLED display circuit in some embodiments of the present invention.
  • FIG. 2 is a timing diagram of some local nodes of an OLED display circuit in an embodiment of the present invention.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include one or more of the described features either explicitly or implicitly.
  • the meaning of "a plurality” is two or more unless specifically and specifically defined otherwise.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship.
  • Connected, or integrally connected may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them.
  • the first feature "above”, “above” and “above” the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.
  • FIG. 1 is an OLED display circuit according to some embodiments of the present invention, which includes an OLED display unit 100, a plurality of data lines S1/S2, a plurality of scan lines G1/G2, and an OLED display unit drive compensation circuit 200. .
  • the OLED display unit includes M rows and N columns of pixel units 101. For example, in this embodiment, there are 2 rows and 2 columns, where M and N are positive integers.
  • Each column of pixel units 101 is connected to a data line, and each row of pixel units 101 is connected to a scan line.
  • the OLED display unit driving compensation circuit 200 includes:
  • each of the first switch tubes 201 is connected to a voltage input end of each of the pixel units 101 of the column of pixel units 101;
  • each of the second switch tubes 203 is connected to a voltage input end of each of the pixel units 101 of the column of pixel units 101;
  • the N sensing units 202 are respectively connected to the output ends of the first switching tubes 201 in one-to-one correspondence, and the sensing units 202 are used to collect the voltage input of each of the pixel units 101.
  • the current information of the terminal is specifically used to collect the first current information in the sensing mode of the voltage input end of each of the pixel units and the second current information in the display mode;
  • calculation processing unit 204 wherein the calculation processing unit 204 is connected to the N sensing units 202, and the calculation processing unit 204 is configured to calculate the data voltage according to the data voltage and the current information. a mapping relationship of the current information, and calculating a data compensation voltage system in the display phase based on the second current information and the mapping relationship.
  • the switching states of the first switching transistor and the second switching transistor connected to the pixel unit of the same column are opposite.
  • each sensing unit 202 includes a first PMOS transistor T1 and a second PMOS transistor T2.
  • the source of the first PMOS transistor T1 is connected to an output end of the corresponding first switching transistor 201.
  • the first PMOS transistor T1. a gate is connected to a source of the first PMOS transistor T1, a gate of the second PMOS transistor T2 is connected to a gate of the first PMOS transistor T1, the first PMOS transistor T1 and a second PMOS
  • the drain of the tube T2 is respectively connected to the power supply terminal, and the source of the second PMOS transistor T2 is connected to the calculation processing unit 204.
  • the calculation processing unit 204 includes a gating module 2041, an analog-to-digital converter 2042, and a processing chip 2043.
  • the input terminals of the gating module 2041 are respectively connected to the sensing unit 202, and the output of the gating module 2041 is output.
  • the terminal is connected to the analog to digital converter 2042, and the analog to digital converter 2042 is connected to the processing chip 2043.
  • the first switching tube 201 and the second switching tube 203 are both PMOS tubes.
  • the OLED display circuit has two states: an sensing mode and a display mode.
  • the sensing mode is mainly used to calculate a mapping relationship between the first current information and the data voltage generated by each pixel unit 101 .
  • each pixel unit 101 is voltage-compensated according to the mapping relationship and the detected second current information, so that the display quality is better.
  • Scan2 is at a high level, and SW3 and SW4 in the second switch 203 are turned off; Scan1 is at a low level, and SW1 and SW2 in the first switch 201 are turned on.
  • the analog-to-digital converter includes a sample/hold circuit and converts the current into a digital signal to obtain an input current and a compensation voltage for each pixel unit in the Nth column of pixel units.
  • step B changing the output potential of the source driver, repeating step A to obtain multiple sets of input current and compensation voltage of each pixel unit in the pixel unit of the Nth column, and acquiring input current and compensation voltage according to the plurality of input currents and compensation voltages Mapping relations.
  • the compensation mapping relationship may be obtained by the following method: establishing a relationship between the sensed input current value I and the compensation voltage Vref, and each pixel unit has two or more sets of correspondences, and curve fitting is performed during compensation, and calculation is performed.
  • the compensation voltage is output.
  • Steps A ⁇ C are repeated to sense the pixel units 101 of all columns of the panel, and the mapping relationship between the corresponding current information and the data voltage of each pixel unit is obtained.
  • the plurality of first switching tubes 201 are all in an off state, and the plurality of second switching tubes 203 are all in an on state, and the compensation unit 204 outputs the compensated voltage to the power supply input end.
  • the first switch tube 201 and the second switch tube 203 are both NMOS transistors.
  • the OLED display unit driving compensation circuit further includes a gate control unit, and the gate control unit is connected to the gates of the first switch tube 201 and the second switch tube 203 to control the first switch tube 201 And a switching state of the second switch tube 203.
  • An embodiment of the present invention further provides an OLED display, including the OLED display circuit in the above embodiment.
  • the OLED display unit driving compensation circuit, the OLED display circuit and the OLED display provided by the invention can calculate the mapping relationship between the voltage compensation value and the input current value for outputting to each pixel unit, and can compensate for each pixel unit. Can improve the uniformity of OLED displays.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of El Displays (AREA)

Abstract

A drive compensation circuit (200) of an OLED display unit, comprising: N first switch tubes (201); N second switch tubes (203); N sensing units (202); and a computation processing unit (204), the computation processing unit (204) being used to compute the mapping between data voltage and current information according to data voltage and current information, and to compute the data compensation voltage for a display stage according to second current information and the mapping.

Description

OLED显示单元驱动补偿电路、OLED显示电路及OLED显示器OLED display unit driving compensation circuit, OLED display circuit and OLED display 技术领域Technical field
本发明涉及液晶显示领域，具体涉及一种OLED显示单元驱动补偿电路、OLED显示电路及OLED显示器。The present invention relates to the field of liquid crystal display, and in particular to an OLED display unit driving compensation circuit, an OLED display circuit, and an OLED display.
背景技术Background technique
由于面板制程的不稳定性等原因，使得面板内每个像素的驱动薄膜晶体管的阈值电压会有差别。因此，即使数据电压相等的施加到各像素的驱动薄膜晶体管，也会出现流入有机发光二极管OLED的电流不一致的情况，导致显示图像质量的均一性难以实现。Due to the instability of the panel process and the like, the threshold voltage of the driving thin film transistor of each pixel in the panel is different. Therefore, even if the driving voltage is applied to the driving thin film transistors of the respective pixels, the current flowing into the organic light emitting diode OLED is inconsistent, resulting in difficulty in achieving uniformity of display image quality.
另外，随着驱动薄膜晶体管驱动时间的推移，会造成薄膜晶体管材料老化、变异，导致驱动薄膜晶体管的阈值电压会漂移等问题。并且板内薄膜晶体管材料的老化程度不同，导致面板内各驱动薄膜晶体管的阈值电压漂移量不同，进而也会造成面板显示的不均匀现象。并且，随着驱动时间的推移，薄膜晶体管材料的老化变得更严重。即使驱动电压相同，流经有机发光二极管的发光电流也很可能不同，造成亮度不均匀。In addition, as the driving time of the driving thin film transistor is changed, the thin film transistor material is aged and mutated, and the threshold voltage of the driving thin film transistor is drifted. Moreover, the degree of aging of the thin film transistor materials in the board is different, which causes the threshold voltage drift of each driving thin film transistor in the panel to be different, which may also cause unevenness of the panel display. Also, as the driving time progresses, the aging of the thin film transistor material becomes more serious. Even if the driving voltage is the same, the illuminating current flowing through the organic light emitting diode is likely to be different, resulting in uneven brightness.
因此，现有技术存在缺陷，急需改进。Therefore, the prior art has drawbacks and is in urgent need of improvement.
技术问题technical problem
本发明实施例的目的是提供一种OLED显示单元驱动补偿电路、OLED显示电路及OLED显示器，以使得OLED显示器显示更均匀。An object of embodiments of the present invention is to provide an OLED display unit driving compensation circuit, an OLED display circuit, and an OLED display to make the OLED display display more uniform.
技术解决方案Technical solution
本发明实施例提供一种OLED显示单元驱动补偿电路，所述OLED显示单元包括M行N列像素单元，其中，每一列像素单元与一数据线连接，每一行像素单元与一扫描线连接，其中，该补偿电路包括：An embodiment of the present invention provides an OLED display unit driving compensation circuit, where the OLED display unit includes M rows and N columns of pixel units, wherein each column of pixel units is connected to a data line, and each row of pixel units is connected to a scan line, wherein The compensation circuit includes:
N个第一开关管，每一所述第一开关管的输入端与一列所述像素单元的中的各个像素单元的电压输入端连接，其中，N为正整数；N first switching tubes, wherein the input end of each of the first switching tubes is connected to a voltage input end of each of the pixel units of the column, wherein N is a positive integer;
N个第二开关管，每一所述第二开关管的输出端与一列所述像素单元的中的各个像素单元的电压输入端连接；N second switching tubes, an output end of each of the second switching tubes being connected to a voltage input end of each of the pixel units of the column;
N个感应单元，所述N个感应单元分别与所述个第一开关管的输出端一一对应地连接，所述感应单元用于采集每一所述像素单元的电压输入端的感应模式下的第一电流信息以及显示模式下的第二电流信息；Each of the N sensing units is connected to the output ends of the first switching tubes in a one-to-one correspondence, and the sensing unit is configured to collect the sensing mode of the voltage input end of each of the pixel units. First current information and second current information in a display mode;
计算处理单元，所述计算处理单元与所述N个感应单元分别连接，所述计算处理单元与所述数据线连接以采集数据电压，所述计算处理单元用于根据所述数据电压以及所述电流信息，计算出所述数据电压与所述电流信息的映射关系，并根据所述第二电流信息以及所述映射关系计算出显示阶段的数据补偿电压；a calculation processing unit, wherein the calculation processing unit is respectively connected to the N sensing units, the calculation processing unit is connected to the data line to collect a data voltage, and the calculation processing unit is configured to use the data voltage according to the data Current information, calculating a mapping relationship between the data voltage and the current information, and calculating a data compensation voltage of the display phase according to the second current information and the mapping relationship;
其中，与同一列像素单元连接的第一开关管以及第二开关管的开关状态相反；Wherein, the switching states of the first switching tube and the second switching tube connected to the pixel unit of the same column are opposite;
所述感应单元包括第一PMOS管以及第二PMOS管，所述第一PMOS管的源极与对应第一开关管的输出端连接，所述第一PMOS管的栅极与所述第一PMOS管的源极连接，所述第二PMOS管的栅极与所述第一PMOS管的栅极连接，所述第一PMOS管以及第二PMOS管漏极分别与供电端连接，所述第二PMOS管的源极与所述计算处理单元连接；The sensing unit includes a first PMOS transistor and a second PMOS transistor, and a source of the first PMOS transistor is connected to an output end of the corresponding first switching transistor, a gate of the first PMOS transistor and the first PMOS transistor a source of the tube is connected, a gate of the second PMOS transistor is connected to a gate of the first PMOS transistor, and a drain of the first PMOS transistor and the second PMOS transistor are respectively connected to a power supply end, and the second a source of the PMOS transistor is coupled to the computing processing unit;
所述计算处理单元包括选通模块、模数转换器以及处理芯片，所述选通模块的输入端分别与所述感应单元连接，所述选通模块的输出端与所述模数转换器连接，所述模数转换器与所述处理芯片连接。The calculation processing unit includes a gating module, an analog-to-digital converter, and a processing chip, wherein the input ends of the gating modules are respectively connected to the sensing unit, and an output end of the gating module is connected to the analog-to-digital converter The analog to digital converter is coupled to the processing chip.
在本发明所述的OLED显示单元驱动补偿电路中，在感应模式下，所述多个第一开关管均处于导通状态，所述多个第二开关管均处于截止状态，所述选通模块依次将与各个所述感应单元依次与所述模数转换器接通，所述模数转换器将所述电流信息转换数字信号，所述处理芯片根据所述数字信号计算电压补偿值与电流值的映射关系。In the OLED display unit driving compensation circuit of the present invention, in the sensing mode, the plurality of first switching tubes are all in an on state, and the plurality of second switching tubes are in an off state, the gating The module sequentially turns on with each of the sensing units in turn with the analog to digital converter, the analog to digital converter converts the current information into a digital signal, and the processing chip calculates a voltage compensation value and current according to the digital signal. The mapping of values.
在本发明所述的OLED显示单元驱动补偿电路中，在显示模式下，所述多个第一开关管均处于截止状态，所述多个第二开关管均处于导通状态，所述补偿单元输出补偿后的电压至所述供电输入端。In the OLED display unit driving compensation circuit of the present invention, in the display mode, the plurality of first switching tubes are all in an off state, and the plurality of second switching tubes are in an on state, the compensation unit The compensated voltage is output to the power supply input.
在本发明所述的OLED显示单元驱动补偿电路中，所述第一开关管以及所述第二开关管均为PMOS管。In the OLED display unit driving compensation circuit of the present invention, the first switching tube and the second switching tube are both PMOS tubes.
在本发明所述的OLED显示单元驱动补偿电路中，所述第一开关管以及所述第二开关管均为NMOS管。In the OLED display unit driving compensation circuit of the present invention, the first switching tube and the second switching tube are both NMOS tubes.
在本发明所述的OLED显示单元驱动补偿电路中，还包括一栅极控制单元，所述栅极控制单元与所述第一开关管以及所述第二开关管的栅极连接，以控制所述第一开关管以及所述第二开关管的开关状态。In the OLED display unit driving compensation circuit of the present invention, the method further includes a gate control unit, and the gate control unit is connected to the gates of the first switch tube and the second switch tube to control the The switching states of the first switch tube and the second switch tube are described.
本发明实施例还提供一种OLED显示单元驱动补偿电路，所述OLED显示单元包括M行N列像素单元，其中，每一列像素单元与一数据线连接，每一行像素单元与一扫描线连接，该补偿电路包括：The embodiment of the present invention further provides an OLED display unit driving compensation circuit, wherein the OLED display unit includes M rows and N columns of pixel units, wherein each column of pixel units is connected to a data line, and each row of pixel units is connected to a scan line. The compensation circuit includes:
N个第一开关管，每一所述第一开关管的输入端与一列所述像素单元的中的各个像素单元的电压输入端连接，其中，N为正整数；N first switching tubes, wherein the input end of each of the first switching tubes is connected to a voltage input end of each of the pixel units of the column, wherein N is a positive integer;
N个第二开关管，每一所述第二开关管的输出端与一列所述像素单元的中的各个像素单元的电压输入端连接；N second switching tubes, an output end of each of the second switching tubes being connected to a voltage input end of each of the pixel units of the column;
N个感应单元，所述N个感应单元分别与所述个第一开关管的输出端一一对应地连接，所述感应单元用于采集每一所述像素单元的电压输入端的感应模式下的第一电流信息以及显示模式下的第二电流信息；Each of the N sensing units is connected to the output ends of the first switching tubes in a one-to-one correspondence, and the sensing unit is configured to collect the sensing mode of the voltage input end of each of the pixel units. First current information and second current information in a display mode;
计算处理单元，所述计算处理单元与所述N个感应单元分别连接，所述计算处理单元与所述数据线连接以采集初始数据电压，所述计算处理单元用于根据所述初始数据电压以及所述电流信息，计算出所述数据电压与所述电流信息的映射关系，并根据所述第二电流信息以及所述映射关系计算出显示阶段的数据补偿电压；a calculation processing unit, wherein the calculation processing unit is respectively connected to the N sensing units, the calculation processing unit is connected to the data line to collect an initial data voltage, and the calculation processing unit is configured to perform according to the initial data voltage and Calculating a mapping relationship between the data voltage and the current information, and calculating a data compensation voltage in a display phase according to the second current information and the mapping relationship;
其中，与同一列像素单元连接的第一开关管以及第二开关管的开关状态相反。The switching states of the first switching transistor and the second switching transistor connected to the pixel unit of the same column are opposite.
在本发明所述的OLED显示单元驱动补偿电路中，所述感应单元包括第一PMOS管以及第二PMOS管，所述第一PMOS管的源极与对应第一开关管的输出端连接，所述第一PMOS管的栅极与所述第一PMOS管的源极连接，所述第二PMOS管的栅极与所述第一PMOS管的栅极连接，所述第一PMOS管以及第二PMOS管漏极分别与供电端连接，所述第二PMOS管的源极与所述计算处理单元连接。In the OLED display unit driving compensation circuit of the present invention, the sensing unit includes a first PMOS transistor and a second PMOS transistor, and a source of the first PMOS transistor is connected to an output end of the corresponding first switching transistor. a gate of the first PMOS transistor is connected to a source of the first PMOS transistor, a gate of the second PMOS transistor is connected to a gate of the first PMOS transistor, the first PMOS transistor and the second The drains of the PMOS transistors are respectively connected to the power supply terminals, and the sources of the second PMOS transistors are connected to the calculation processing unit.
在本发明所述的OLED显示单元驱动补偿电路中，所述计算处理单元包括选通模块、模数转换器以及处理芯片，所述选通模块的输入端分别与所述感应单元连接，所述选通模块的输出端与所述模数转换器连接，所述模数转换器与所述处理芯片连接。In the OLED display unit driving compensation circuit of the present invention, the calculation processing unit includes a gating module, an analog-to-digital converter, and a processing chip, and the input ends of the gating modules are respectively connected to the sensing unit, An output of the gating module is coupled to the analog to digital converter, the analog to digital converter being coupled to the processing chip.
在本发明所述的OLED显示单元驱动补偿电路中，在感应模式下，所述多个第一开关管均处于导通状态，所述多个第二开关管均处于截止状态，所述选通模块依次将与各个所述感应单元依次与所述模数转换器接通，所述模数转换器将所述电流信息转换数字信号，所述处理芯片根据所述数字信号计算电压补偿值与电流值的映射关系。In the OLED display unit driving compensation circuit of the present invention, in the sensing mode, the plurality of first switching tubes are all in an on state, and the plurality of second switching tubes are in an off state, the gating The module sequentially turns on with each of the sensing units in turn with the analog to digital converter, the analog to digital converter converts the current information into a digital signal, and the processing chip calculates a voltage compensation value and current according to the digital signal. The mapping of values.
在本发明所述的OLED显示单元驱动补偿电路中，在显示模式下，所述多个第一开关管均处于截止状态，所述多个第二开关管均处于导通状态，所述补偿单元输出补偿后的电压至所述供电输入端。In the OLED display unit driving compensation circuit of the present invention, in the display mode, the plurality of first switching tubes are all in an off state, and the plurality of second switching tubes are in an on state, the compensation unit The compensated voltage is output to the power supply input.
在本发明所述的OLED显示单元驱动补偿电路中，所述第一开关管以及所述第二开关管均为PMOS管。In the OLED display unit driving compensation circuit of the present invention, the first switching tube and the second switching tube are both PMOS tubes.
在本发明所述的OLED显示单元驱动补偿电路中，所述第一开关管以及所述第二开关管均为NMOS管。In the OLED display unit driving compensation circuit of the present invention, the first switching tube and the second switching tube are both NMOS tubes.
在本发明所述的OLED显示单元驱动补偿电路中，还包括一栅极控制单元，所述栅极控制单元与所述第一开关管以及所述第二开关管的栅极连接，以控制所述第一开关管以及所述第二开关管的开关状态。In the OLED display unit driving compensation circuit of the present invention, the method further includes a gate control unit, and the gate control unit is connected to the gates of the first switch tube and the second switch tube to control the The switching states of the first switch tube and the second switch tube are described.
一种OLED显示电路，其包括OLED显示单元驱动补偿电路，所述OLED显示单元包括M行N列像素单元，其中，每一列像素单元与一数据线连接，每一行像素单元与一扫描线连接，其中，该补偿电路包括：An OLED display circuit comprising an OLED display unit driving compensation circuit, wherein the OLED display unit comprises M rows and N columns of pixel units, wherein each column of pixel units is connected to a data line, and each row of pixel units is connected to a scan line. Wherein, the compensation circuit comprises:
N个第一开关管，每一所述第一开关管的输入端与一列所述像素单元的中的各个像素单元的电压输入端连接，其中，N为正整数；N first switching tubes, wherein the input end of each of the first switching tubes is connected to a voltage input end of each of the pixel units of the column, wherein N is a positive integer;
N个第二开关管，每一所述第二开关管的输出端与一列所述像素单元的中的各个像素单元的电压输入端连接；N second switching tubes, an output end of each of the second switching tubes being connected to a voltage input end of each of the pixel units of the column;
N个感应单元，所述N个感应单元分别与所述个第一开关管的输出端一一对应地连接，所述感应单元用于采集每一所述像素单元的电压输入端的感应模式下的第一电流信息以及显示模式下的第二电流信息；Each of the N sensing units is connected to the output ends of the first switching tubes in a one-to-one correspondence, and the sensing unit is configured to collect the sensing mode of the voltage input end of each of the pixel units. First current information and second current information in a display mode;
计算处理单元，所述计算处理单元与所述N个感应单元分别连接，所述计算处理单元与所述数据线连接以采集数据电压，所述计算处理单元用于根据所述数据电压以及所述电流信息，计算出所述数据电压与所述电流信息的映射关系，并根据所述第二电流信息以及所述映射关系计算出显示阶段的数据补偿电压；a calculation processing unit, wherein the calculation processing unit is respectively connected to the N sensing units, the calculation processing unit is connected to the data line to collect a data voltage, and the calculation processing unit is configured to use the data voltage according to the data Current information, calculating a mapping relationship between the data voltage and the current information, and calculating a data compensation voltage of the display phase according to the second current information and the mapping relationship;
其中，与同一列像素单元连接的第一开关管以及第二开关管的开关状态相反。The switching states of the first switching transistor and the second switching transistor connected to the pixel unit of the same column are opposite.
在本发明的OLED显示电路中，所述感应单元包括第一PMOS管以及第二PMOS管，所述第一PMOS管的源极与对应第一开关管的输出端连接，所述第一PMOS管的栅极与所述第一PMOS管的源极连接，所述第二PMOS管的栅极与所述第一PMOS管的栅极连接，所述第一PMOS管以及第二PMOS管漏极分别与供电端连接，所述第二PMOS管的源极与所述计算处理单元连接。In the OLED display circuit of the present invention, the sensing unit includes a first PMOS transistor and a second PMOS transistor, and a source of the first PMOS transistor is connected to an output end of the corresponding first switching transistor, the first PMOS transistor a gate is connected to a source of the first PMOS transistor, a gate of the second PMOS transistor is connected to a gate of the first PMOS transistor, and a drain of the first PMOS transistor and the second PMOS transistor are respectively Connected to the power supply terminal, the source of the second PMOS transistor is connected to the calculation processing unit.
在本发明的OLED显示电路中，所述计算处理单元包括选通模块、模数转换器以及处理芯片，所述选通模块的输入端分别与所述感应单元连接，所述选通模块的输出端与所述模数转换器连接，所述模数转换器与所述处理芯片连接。In the OLED display circuit of the present invention, the calculation processing unit includes a gating module, an analog-to-digital converter, and a processing chip, and the input ends of the gating modules are respectively connected to the sensing unit, and the output of the gating module The terminal is connected to the analog to digital converter, and the analog to digital converter is connected to the processing chip.
在本发明的OLED显示电路中，在感应模式下，所述多个第一开关管均处于导通状态，所述多个第二开关管均处于截止状态，所述选通模块依次将与各个所述感应单元依次与所述模数转换器接通，所述模数转换器将所述电流信息转换数字信号，所述处理芯片根据所述数字信号计算电压补偿值与电流值的映射关系。In the OLED display circuit of the present invention, in the sensing mode, the plurality of first switching tubes are all in an on state, the plurality of second switching tubes are in an off state, and the gating modules are sequentially and in each The sensing unit is sequentially connected to the analog-to-digital converter, and the analog-to-digital converter converts the current information into a digital signal, and the processing chip calculates a mapping relationship between the voltage compensation value and the current value according to the digital signal.
在本发明的OLED显示电路中，在显示模式下，所述多个第一开关管均处于截止状态，所述多个第二开关管均处于导通状态，所述补偿单元输出补偿后的电压至所述供电输入端。In the OLED display circuit of the present invention, in the display mode, the plurality of first switching tubes are all in an off state, the plurality of second switching tubes are all in an on state, and the compensation unit outputs the compensated voltage To the power supply input.
在本发明的OLED显示电路中，所述第一开关管以及所述第二开关管均为PMOS管。In the OLED display circuit of the present invention, the first switching transistor and the second switching transistor are both PMOS transistors.
一种OLED显示器，包括以上所述的OLED显示单元驱动补偿电路。An OLED display comprising the OLED display unit drive compensation circuit described above.
有益效果Beneficial effect
本发明提供的OLED显示单元驱动补偿电路、OLED显示电路及OLED显示器通过计算出用于输出给每一像素单元的电压补偿值与输入电流值的映射关系，可以针对每一像素单元进行补偿，因此，可以提高OLED显示器的均匀性。The OLED display unit driving compensation circuit, the OLED display circuit and the OLED display provided by the invention can calculate the mapping relationship between the voltage compensation value and the input current value for outputting to each pixel unit, and can compensate for each pixel unit. Can improve the uniformity of OLED displays.
附图说明DRAWINGS
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings can also be obtained from those skilled in the art based on these drawings without paying any creative effort.
图1为本发明一些实施例中的OLED显示电路的结构示意图。FIG. 1 is a schematic structural diagram of an OLED display circuit in some embodiments of the present invention.
图2为本发明实施例中的OLED显示电路的一些局部节点时序图。2 is a timing diagram of some local nodes of an OLED display circuit in an embodiment of the present invention.
本发明的最佳实施方式BEST MODE FOR CARRYING OUT THE INVENTION
下面详细描述本发明的实施方式，所述实施方式的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientations of "post", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the present invention and the simplified description, and is not intended to indicate or imply that the device or component referred to has a specific orientation, and is constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the invention. Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include one or more of the described features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.
下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本发明。此外，本发明可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本发明提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described below. Of course, they are merely examples and are not intended to limit the invention. In addition, the present invention may be repeated with reference to the numerals and/or reference numerals in the various examples, which are for the purpose of simplicity and clarity, and do not indicate the relationship between the various embodiments and/or arrangements discussed. Moreover, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the use of other processes and/or the use of other materials.
请参阅图1，图1是本发明一些实施例中的OLED显示电路，其包括OLED显示单元100、多条数据线S1/S2、多条扫描线G1/G2、以及OLED显示单元驱动补偿电路200。Please refer to FIG. 1. FIG. 1 is an OLED display circuit according to some embodiments of the present invention, which includes an OLED display unit 100, a plurality of data lines S1/S2, a plurality of scan lines G1/G2, and an OLED display unit drive compensation circuit 200. .
其中，该OLED显示单元包括M行N列像素单元101，例如，本实施例中为2行2列，其中M和N均为正整数。每一列像素单元101与一数据线连接，每一行像素单元101与一扫描线连接。The OLED display unit includes M rows and N columns of pixel units 101. For example, in this embodiment, there are 2 rows and 2 columns, where M and N are positive integers. Each column of pixel units 101 is connected to a data line, and each row of pixel units 101 is connected to a scan line.
其中，在一些实施例中，该OLED显示单元驱动补偿电路200包括：In some embodiments, the OLED display unit driving compensation circuit 200 includes:
N个第一开关管201，每一所述第一开关管201的输入端与一列所述像素单元101的中的各个像素单元101的电压输入端连接；N first switch tubes 201, the input end of each of the first switch tubes 201 is connected to a voltage input end of each of the pixel units 101 of the column of pixel units 101;
N个第二开关管203，每一所述第二开关管203的输出端与一列所述像素单元101的中的各个像素单元101的电压输入端连接；N second switch tubes 203, the output end of each of the second switch tubes 203 is connected to a voltage input end of each of the pixel units 101 of the column of pixel units 101;
N个感应单元202，所述N个感应单元202分别与所述个第一开关管201的输出端一一对应地连接，所述感应单元202用于采集每一所述像素单元101的电压输入端的电流信息，具体用于采集每一所述像素单元的电压输入端的感应模式下的第一电流信息以及显示模式下的第二电流信息；The N sensing units 202 are respectively connected to the output ends of the first switching tubes 201 in one-to-one correspondence, and the sensing units 202 are used to collect the voltage input of each of the pixel units 101. The current information of the terminal is specifically used to collect the first current information in the sensing mode of the voltage input end of each of the pixel units and the second current information in the display mode;
计算处理单元204，所述计算处理单元204与所述N个感应单元202分别连接，所述计算处理单元204用于根据所述数据电压以及所述电流信息，计算出所述数据电压与所述电流信息的映射关系，并根据所述第二电流信息以及所述映射关系计算出显示阶段的数据补偿电压系。a calculation processing unit 204, wherein the calculation processing unit 204 is connected to the N sensing units 202, and the calculation processing unit 204 is configured to calculate the data voltage according to the data voltage and the current information. a mapping relationship of the current information, and calculating a data compensation voltage system in the display phase based on the second current information and the mapping relationship.
其中，与同一列像素单元连接的第一开关管以及第二开关管的开关状态相反。The switching states of the first switching transistor and the second switching transistor connected to the pixel unit of the same column are opposite.
具体地，每一感应单元202包括第一PMOS管T1以及第二PMOS管T2，所述第一PMOS管T1的源极与对应第一开关管201的输出端连接，所述第一PMOS管T1的栅极与所述第一PMOS管T1的源极连接，所述第二PMOS管T2的栅极与所述第一PMOS管T1的栅极连接，所述第一PMOS管T1以及第二PMOS管T2的漏极分别与供电端连接，所述第二PMOS管T2的源极与所述计算处理单元204连接。Specifically, each sensing unit 202 includes a first PMOS transistor T1 and a second PMOS transistor T2. The source of the first PMOS transistor T1 is connected to an output end of the corresponding first switching transistor 201. The first PMOS transistor T1. a gate is connected to a source of the first PMOS transistor T1, a gate of the second PMOS transistor T2 is connected to a gate of the first PMOS transistor T1, the first PMOS transistor T1 and a second PMOS The drain of the tube T2 is respectively connected to the power supply terminal, and the source of the second PMOS transistor T2 is connected to the calculation processing unit 204.
在一些实施例中，计算处理单元204包括选通模块2041、模数转换器2042以及处理芯片2043，选通模块2041的输入端分别与所述感应单元202连接，所述选通模块2041的输出端与所述模数转换器2042连接，所述模数转换器2042与处理芯片2043连接。In some embodiments, the calculation processing unit 204 includes a gating module 2041, an analog-to-digital converter 2042, and a processing chip 2043. The input terminals of the gating module 2041 are respectively connected to the sensing unit 202, and the output of the gating module 2041 is output. The terminal is connected to the analog to digital converter 2042, and the analog to digital converter 2042 is connected to the processing chip 2043.
在本发明所述的OLED显示单元驱动补偿电路中，所述第一开关管201以及所述第二开关管203均为PMOS管。In the OLED display unit driving compensation circuit of the present invention, the first switching tube 201 and the second switching tube 203 are both PMOS tubes.
请参照图2，其中，该OLED显示电路具有感应模式以及显示模式两个状态，在感应模式主要是用于计算生成每一像素单元101的第一电流信息与数据电压的映射关系。显示模式下则是根据映射关系以及检测的第二电流信息对每一像素单元101进行电压补偿，使其显示画质更好。Please refer to FIG. 2 , wherein the OLED display circuit has two states: an sensing mode and a display mode. The sensing mode is mainly used to calculate a mapping relationship between the first current information and the data voltage generated by each pixel unit 101 . In the display mode, each pixel unit 101 is voltage-compensated according to the mapping relationship and the detected second current information, so that the display quality is better.
其中，在感应阶段，Scan2为高电平，第二开关管203中的SW3以及SW4关闭；Scan1为低电平，第一开关管201中的SW1以及SW2开启。In the sensing phase, Scan2 is at a high level, and SW3 and SW4 in the second switch 203 are turned off; Scan1 is at a low level, and SW1 and SW2 in the first switch 201 are turned on.
A、感应到第N列的像素单元101时，第N列的像素单元101的薄膜晶体管Q2打开，源极驱动器输出Vref1电位，选通模块将各个感应单元与模数转换器之间逐个选通。模数转换器包含采样/保持电路，并将电流转换为数字信号，获得第N列像素单元中的每个像素单元的输入电流与补偿电压。A. When the pixel unit 101 of the Nth column is sensed, the thin film transistor Q2 of the pixel unit 101 of the Nth column is turned on, the source driver outputs a potential of Vref1, and the gate module strobes each sensing unit and the analog-to-digital converter one by one. . The analog-to-digital converter includes a sample/hold circuit and converts the current into a digital signal to obtain an input current and a compensation voltage for each pixel unit in the Nth column of pixel units.
B、改变源极驱动器输出电位，重复步骤A获得第N列像素单元中的每个像素单元的多组输入电流与补偿电压，并根据该多组输入电流与补偿电压获取到输入电流与补偿电压映射关系。B. changing the output potential of the source driver, repeating step A to obtain multiple sets of input current and compensation voltage of each pixel unit in the pixel unit of the Nth column, and acquiring input current and compensation voltage according to the plurality of input currents and compensation voltages Mapping relations.
C、擦除阶段：第N列的像素单元101的薄膜晶体管Q2打开，源极驱动器输出Vini低电位，该列显示黑画面。C. Erase phase: The thin film transistor Q2 of the pixel unit 101 of the Nth column is turned on, the source driver outputs Vini low potential, and the column displays a black screen.
其中，补偿映射关系可以采用以下方法获取：将感应到的输入电流值I和补偿电压Vref的关系建立关系，每个像素单元存在两组或两组以上对应关系，补偿时进行曲线拟合，计算出补偿电压。The compensation mapping relationship may be obtained by the following method: establishing a relationship between the sensed input current value I and the compensation voltage Vref, and each pixel unit has two or more sets of correspondences, and curve fitting is performed during compensation, and calculation is performed. The compensation voltage is output.
重复步骤A~C，对面板所有列的像素单元101进行感应，获得每个像素单元的对应的电流信息与数据电压的映射关系。Steps A~C are repeated to sense the pixel units 101 of all columns of the panel, and the mapping relationship between the corresponding current information and the data voltage of each pixel unit is obtained.
其中，在显示模式下，多个第一开关管201均处于截止状态，多个第二开关管203均处于导通状态，所述补偿单元204输出补偿后的电压至所述供电输入端。In the display mode, the plurality of first switching tubes 201 are all in an off state, and the plurality of second switching tubes 203 are all in an on state, and the compensation unit 204 outputs the compensated voltage to the power supply input end.
当然，在一些实施例中，所述第一开关管201以及所述第二开关管203均为NMOS管。Of course, in some embodiments, the first switch tube 201 and the second switch tube 203 are both NMOS transistors.
该OLED显示单元驱动补偿电路中还包括一栅极控制单元，栅极控制单元与所述第一开关管201以及所述第二开关管203的栅极连接，以控制所述第一开关管201以及所述第二开关管203的开关状态。The OLED display unit driving compensation circuit further includes a gate control unit, and the gate control unit is connected to the gates of the first switch tube 201 and the second switch tube 203 to control the first switch tube 201 And a switching state of the second switch tube 203.
本发明实施例还提供了一种OLED显示器，包括上述实施例中的OLED显示电路。An embodiment of the present invention further provides an OLED display, including the OLED display circuit in the above embodiment.
本发明提供的OLED显示单元驱动补偿电路、OLED显示电路及OLED显示器通过计算出用于输出给每一像素单元的电压补偿值与输入电流值的映射关系，可以针对每一像素单元进行补偿，因此，可以提高OLED显示器的均匀性。The OLED display unit driving compensation circuit, the OLED display circuit and the OLED display provided by the invention can calculate the mapping relationship between the voltage compensation value and the input current value for outputting to each pixel unit, and can compensate for each pixel unit. Can improve the uniformity of OLED displays.
以上对本发明实施例提供的大尺寸显示器包装箱进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明。同时，对于本领域的技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制The large-size display package provided by the embodiment of the present invention is described in detail. The principles and embodiments of the present invention are described in detail herein. The description of the above embodiments is only for facilitating understanding of the present invention. In the meantime, those skilled in the art will be able to change the specific embodiments and the scope of application according to the idea of the present invention. In summary, the content of the present specification should not be construed as limiting the present invention.

Claims (20)

  1. 一种OLED显示单元驱动补偿电路，所述OLED显示单元包括M行N列像素单元，其中，每一列像素单元与一数据线连接，每一行像素单元与一扫描线连接，其中，该补偿电路包括：An OLED display unit driving compensation circuit, wherein the OLED display unit comprises M rows and N columns of pixel units, wherein each column of pixel units is connected to a data line, and each row of pixel units is connected to a scan line, wherein the compensation circuit comprises :
    N个第一开关管，每一所述第一开关管的输入端与一列所述像素单元的中的各个像素单元的电压输入端连接，其中，N为正整数；N first switching tubes, wherein the input end of each of the first switching tubes is connected to a voltage input end of each of the pixel units of the column, wherein N is a positive integer;
    N个第二开关管，每一所述第二开关管的输出端与一列所述像素单元的中的各个像素单元的电压输入端连接；N second switching tubes, an output end of each of the second switching tubes being connected to a voltage input end of each of the pixel units of the column;
    N个感应单元，所述N个感应单元分别与所述个第一开关管的输出端一一对应地连接，所述感应单元用于采集每一所述像素单元的电压输入端的感应模式下的第一电流信息以及显示模式下的第二电流信息；Each of the N sensing units is connected to the output ends of the first switching tubes in a one-to-one correspondence, and the sensing unit is configured to collect the sensing mode of the voltage input end of each of the pixel units. First current information and second current information in a display mode;
    计算处理单元，所述计算处理单元与所述N个感应单元分别连接，所述计算处理单元与所述数据线连接以采集数据电压，所述计算处理单元用于根据所述数据电压以及所述电流信息，计算出所述数据电压与所述电流信息的映射关系，并根据所述第二电流信息以及所述映射关系计算出显示阶段的数据补偿电压；a calculation processing unit, wherein the calculation processing unit is respectively connected to the N sensing units, the calculation processing unit is connected to the data line to collect a data voltage, and the calculation processing unit is configured to use the data voltage according to the data Current information, calculating a mapping relationship between the data voltage and the current information, and calculating a data compensation voltage of the display phase according to the second current information and the mapping relationship;
    其中，与同一列像素单元连接的第一开关管以及第二开关管的开关状态相反；Wherein, the switching states of the first switching tube and the second switching tube connected to the pixel unit of the same column are opposite;
    所述感应单元包括第一PMOS管以及第二PMOS管，所述第一PMOS管的源极与对应第一开关管的输出端连接，所述第一PMOS管的栅极与所述第一PMOS管的源极连接，所述第二PMOS管的栅极与所述第一PMOS管的栅极连接，所述第一PMOS管以及第二PMOS管漏极分别与供电端连接，所述第二PMOS管的源极与所述计算处理单元连接；The sensing unit includes a first PMOS transistor and a second PMOS transistor, and a source of the first PMOS transistor is connected to an output end of the corresponding first switching transistor, a gate of the first PMOS transistor and the first PMOS transistor a source of the tube is connected, a gate of the second PMOS transistor is connected to a gate of the first PMOS transistor, and a drain of the first PMOS transistor and the second PMOS transistor are respectively connected to a power supply end, and the second a source of the PMOS transistor is coupled to the computing processing unit;
    所述计算处理单元包括选通模块、模数转换器以及处理芯片，所述选通模块的输入端分别与所述感应单元连接，所述选通模块的输出端与所述模数转换器连接，所述模数转换器与所述处理芯片连接。The calculation processing unit includes a gating module, an analog-to-digital converter, and a processing chip, wherein the input ends of the gating modules are respectively connected to the sensing unit, and an output end of the gating module is connected to the analog-to-digital converter The analog to digital converter is coupled to the processing chip.
  2. 根据权利要求1所述的OLED显示单元驱动补偿电路，其中，在感应模式下，所述多个第一开关管均处于导通状态，所述多个第二开关管均处于截止状态，所述选通模块依次将与各个所述感应单元依次与所述模数转换器接通，所述模数转换器将所述电流信息转换数字信号，所述处理芯片根据所述数字信号计算电压补偿值与电流值的映射关系。The OLED display unit driving compensation circuit according to claim 1, wherein, in the sensing mode, the plurality of first switching tubes are all in an on state, and the plurality of second switching tubes are in an off state, The gating module sequentially turns on with each of the sensing units in turn with the analog to digital converter, the analog to digital converter converts the current information into a digital signal, and the processing chip calculates a voltage compensation value according to the digital signal. The mapping relationship with the current value.
  3. 根据权利要求1所述的OLED显示单元驱动补偿电路，其中，在显示模式下，所述多个第一开关管均处于截止状态，所述多个第二开关管均处于导通状态，所述补偿单元输出补偿后的电压至所述供电输入端。The OLED display unit driving compensation circuit according to claim 1, wherein, in the display mode, the plurality of first switching tubes are all in an off state, and the plurality of second switching tubes are in an on state, The compensation unit outputs the compensated voltage to the power supply input terminal.
  4. 根据权利要求1所述的OLED显示单元驱动补偿电路，其中，所述第一开关管以及所述第二开关管均为PMOS管。The OLED display unit driving compensation circuit according to claim 1, wherein the first switching transistor and the second switching transistor are both PMOS transistors.
  5. 根据权利要求1所述的OLED显示单元驱动补偿电路，其中，所述第一开关管以及所述第二开关管均为NMOS管。The OLED display unit driving compensation circuit according to claim 1, wherein the first switching tube and the second switching tube are both NMOS tubes.
  6. 根据权利要求1所述的OLED显示单元驱动补偿电路，其中，还包括一栅极控制单元，所述栅极控制单元与所述第一开关管以及所述第二开关管的栅极连接，以控制所述第一开关管以及所述第二开关管的开关状态。The OLED display unit driving compensation circuit according to claim 1, further comprising a gate control unit, wherein the gate control unit is connected to the gates of the first switching tube and the second switching tube to Controlling a switching state of the first switching transistor and the second switching transistor.
  7. 一种OLED显示单元驱动补偿电路，所述OLED显示单元包括M行N列像素单元，其中，每一列像素单元与一数据线连接，每一行像素单元与一扫描线连接，其中，该补偿电路包括：An OLED display unit driving compensation circuit, wherein the OLED display unit comprises M rows and N columns of pixel units, wherein each column of pixel units is connected to a data line, and each row of pixel units is connected to a scan line, wherein the compensation circuit comprises :
    N个第一开关管，每一所述第一开关管的输入端与一列所述像素单元的中的各个像素单元的电压输入端连接，其中，N为正整数；N first switching tubes, wherein the input end of each of the first switching tubes is connected to a voltage input end of each of the pixel units of the column, wherein N is a positive integer;
    N个第二开关管，每一所述第二开关管的输出端与一列所述像素单元的中的各个像素单元的电压输入端连接；N second switching tubes, an output end of each of the second switching tubes being connected to a voltage input end of each of the pixel units of the column;
    N个感应单元，所述N个感应单元分别与所述个第一开关管的输出端一一对应地连接，所述感应单元用于采集每一所述像素单元的电压输入端的感应模式下的第一电流信息以及显示模式下的第二电流信息；Each of the N sensing units is connected to the output ends of the first switching tubes in a one-to-one correspondence, and the sensing unit is configured to collect the sensing mode of the voltage input end of each of the pixel units. First current information and second current information in a display mode;
    计算处理单元，所述计算处理单元与所述N个感应单元分别连接，所述计算处理单元与所述数据线连接以采集数据电压，所述计算处理单元用于根据所述数据电压以及所述电流信息，计算出所述数据电压与所述电流信息的映射关系，并根据所述第二电流信息以及所述映射关系计算出显示阶段的数据补偿电压；a calculation processing unit, wherein the calculation processing unit is respectively connected to the N sensing units, the calculation processing unit is connected to the data line to collect a data voltage, and the calculation processing unit is configured to use the data voltage according to the data Current information, calculating a mapping relationship between the data voltage and the current information, and calculating a data compensation voltage of the display phase according to the second current information and the mapping relationship;
    其中，与同一列像素单元连接的第一开关管以及第二开关管的开关状态相反。The switching states of the first switching transistor and the second switching transistor connected to the pixel unit of the same column are opposite.
  8. 根据权利要求7所述的OLED显示单元驱动补偿电路，其中，所述感应单元包括第一PMOS管以及第二PMOS管，所述第一PMOS管的源极与对应第一开关管的输出端连接，所述第一PMOS管的栅极与所述第一PMOS管的源极连接，所述第二PMOS管的栅极与所述第一PMOS管的栅极连接，所述第一PMOS管以及第二PMOS管漏极分别与供电端连接，所述第二PMOS管的源极与所述计算处理单元连接。The OLED display unit driving compensation circuit according to claim 7, wherein the sensing unit comprises a first PMOS transistor and a second PMOS transistor, and a source of the first PMOS transistor is connected to an output end of the corresponding first switching transistor a gate of the first PMOS transistor is connected to a source of the first PMOS transistor, a gate of the second PMOS transistor is connected to a gate of the first PMOS transistor, the first PMOS transistor and The drains of the second PMOS transistors are respectively connected to the power supply terminals, and the sources of the second PMOS transistors are connected to the calculation processing unit.
  9. 根据权利要求7所述的OLED显示单元驱动补偿电路，其中，所述计算处理单元包括选通模块、模数转换器以及处理芯片，所述选通模块的输入端分别与所述感应单元连接，所述选通模块的输出端与所述模数转换器连接，所述模数转换器与所述处理芯片连接。The OLED display unit driving compensation circuit according to claim 7, wherein the calculation processing unit comprises a gating module, an analog-to-digital converter and a processing chip, wherein the input terminals of the gating module are respectively connected to the sensing unit, An output of the gating module is coupled to the analog to digital converter, and the analog to digital converter is coupled to the processing chip.
  10. 根据权利要求9所述的OLED显示单元驱动补偿电路，其中，在感应模式下，所述多个第一开关管均处于导通状态，所述多个第二开关管均处于截止状态，所述选通模块依次将与各个所述感应单元依次与所述模数转换器接通，所述模数转换器将所述电流信息转换数字信号，所述处理芯片根据所述数字信号计算电压补偿值与电流值的映射关系。The OLED display unit driving compensation circuit according to claim 9, wherein, in the sensing mode, the plurality of first switching tubes are all in an on state, and the plurality of second switching tubes are in an off state, The gating module sequentially turns on with each of the sensing units in turn with the analog to digital converter, the analog to digital converter converts the current information into a digital signal, and the processing chip calculates a voltage compensation value according to the digital signal. The mapping relationship with the current value.
  11. 根据权利要求9所述的OLED显示单元驱动补偿电路，其中，在显示模式下，所述多个第一开关管均处于截止状态，所述多个第二开关管均处于导通状态，所述补偿单元输出补偿后的电压至所述供电输入端。The OLED display unit driving compensation circuit according to claim 9, wherein, in the display mode, the plurality of first switching tubes are in an off state, and the plurality of second switching tubes are in an on state, The compensation unit outputs the compensated voltage to the power supply input terminal.
  12. 根据权利要求7所述的OLED显示单元驱动补偿电路，其中，所述第一开关管以及所述第二开关管均为PMOS管。The OLED display unit driving compensation circuit according to claim 7, wherein the first switching transistor and the second switching transistor are both PMOS transistors.
  13. 根据权利要求7所述的OLED显示单元驱动补偿电路，其中，所述第一开关管以及所述第二开关管均为NMOS管。The OLED display unit driving compensation circuit according to claim 7, wherein the first switching transistor and the second switching transistor are both NMOS transistors.
  14. 根据权利要求7所述的OLED显示单元驱动补偿电路，其中，还包括一栅极控制单元，所述栅极控制单元与所述第一开关管以及所述第二开关管的栅极连接，以控制所述第一开关管以及所述第二开关管的开关状态。The OLED display unit driving compensation circuit according to claim 7, further comprising a gate control unit, wherein the gate control unit is connected to the gates of the first switching tube and the second switching tube to Controlling a switching state of the first switching transistor and the second switching transistor.
  15. 一种OLED显示电路，其包括OLED显示单元驱动补偿电路，所述OLED显示单元包括M行N列像素单元，其中，每一列像素单元与一数据线连接，每一行像素单元与一扫描线连接，其中，该补偿电路包括：An OLED display circuit comprising an OLED display unit driving compensation circuit, wherein the OLED display unit comprises M rows and N columns of pixel units, wherein each column of pixel units is connected to a data line, and each row of pixel units is connected to a scan line. Wherein, the compensation circuit comprises:
    N个第一开关管，每一所述第一开关管的输入端与一列所述像素单元的中的各个像素单元的电压输入端连接，其中，N为正整数；N first switching tubes, wherein the input end of each of the first switching tubes is connected to a voltage input end of each of the pixel units of the column, wherein N is a positive integer;
    N个第二开关管，每一所述第二开关管的输出端与一列所述像素单元的中的各个像素单元的电压输入端连接；N second switching tubes, an output end of each of the second switching tubes being connected to a voltage input end of each of the pixel units of the column;
    N个感应单元，所述N个感应单元分别与所述个第一开关管的输出端一一对应地连接，所述感应单元用于采集每一所述像素单元的电压输入端的感应模式下的第一电流信息以及显示模式下的第二电流信息；Each of the N sensing units is connected to the output ends of the first switching tubes in a one-to-one correspondence, and the sensing unit is configured to collect the sensing mode of the voltage input end of each of the pixel units. First current information and second current information in a display mode;
    计算处理单元，所述计算处理单元与所述N个感应单元分别连接，所述计算处理单元与所述数据线连接以采集数据电压，所述计算处理单元用于根据所述数据电压以及所述电流信息，计算出所述数据电压与所述电流信息的映射关系，并根据所述第二电流信息以及所述映射关系计算出显示阶段的数据补偿电压；a calculation processing unit, wherein the calculation processing unit is respectively connected to the N sensing units, the calculation processing unit is connected to the data line to collect a data voltage, and the calculation processing unit is configured to use the data voltage according to the data Current information, calculating a mapping relationship between the data voltage and the current information, and calculating a data compensation voltage of the display phase according to the second current information and the mapping relationship;
    其中，与同一列像素单元连接的第一开关管以及第二开关管的开关状态相反。The switching states of the first switching transistor and the second switching transistor connected to the pixel unit of the same column are opposite.
  16. 根据权利要求15所述的OLED显示单元驱动补偿电路，其中，所述感应单元包括第一PMOS管以及第二PMOS管，所述第一PMOS管的源极与对应第一开关管的输出端连接，所述第一PMOS管的栅极与所述第一PMOS管的源极连接，所述第二PMOS管的栅极与所述第一PMOS管的栅极连接，所述第一PMOS管以及第二PMOS管漏极分别与供电端连接，所述第二PMOS管的源极与所述计算处理单元连接。The OLED display unit driving compensation circuit according to claim 15, wherein the sensing unit comprises a first PMOS transistor and a second PMOS transistor, and a source of the first PMOS transistor is connected to an output end of the corresponding first switching transistor a gate of the first PMOS transistor is connected to a source of the first PMOS transistor, a gate of the second PMOS transistor is connected to a gate of the first PMOS transistor, the first PMOS transistor and The drains of the second PMOS transistors are respectively connected to the power supply terminals, and the sources of the second PMOS transistors are connected to the calculation processing unit.
  17. 根据权利要求15所述的OLED显示单元驱动补偿电路，其中，所述计算处理单元包括选通模块、模数转换器以及处理芯片，所述选通模块的输入端分别与所述感应单元连接，所述选通模块的输出端与所述模数转换器连接，所述模数转换器与所述处理芯片连接。The OLED display unit driving compensation circuit according to claim 15, wherein the calculation processing unit comprises a gating module, an analog-to-digital converter and a processing chip, wherein the input terminals of the gating module are respectively connected to the sensing unit, An output of the gating module is coupled to the analog to digital converter, and the analog to digital converter is coupled to the processing chip.
  18. 根据权利要求17所述的OLED显示单元驱动补偿电路，其中，在感应模式下，所述多个第一开关管均处于导通状态，所述多个第二开关管均处于截止状态，所述选通模块依次将与各个所述感应单元依次与所述模数转换器接通，所述模数转换器将所述电流信息转换数字信号，所述处理芯片根据所述数字信号计算电压补偿值与电流值的映射关系。The OLED display unit driving compensation circuit according to claim 17, wherein, in the sensing mode, the plurality of first switching tubes are all in an on state, and the plurality of second switching tubes are in an off state, The gating module sequentially turns on with each of the sensing units in turn with the analog to digital converter, the analog to digital converter converts the current information into a digital signal, and the processing chip calculates a voltage compensation value according to the digital signal. The mapping relationship with the current value.
  19. 根据权利要求17所述的OLED显示单元驱动补偿电路，其中，在显示模式下，所述多个第一开关管均处于截止状态，所述多个第二开关管均处于导通状态，所述补偿单元输出补偿后的电压至所述供电输入端。The OLED display unit driving compensation circuit according to claim 17, wherein, in the display mode, the plurality of first switching tubes are all in an off state, and the plurality of second switching tubes are in an on state, The compensation unit outputs the compensated voltage to the power supply input terminal.
  20. 根据权利要求15所述的OLED显示单元驱动补偿电路，其中，所述第一开关管以及所述第二开关管均为PMOS管。The OLED display unit driving compensation circuit according to claim 15, wherein the first switching transistor and the second switching transistor are both PMOS transistors.
PCT/CN2018/085905 2018-04-04 2018-05-07 Drive compensation circuit of oled display unit, oled display circuit and oled display WO2019192049A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/078,045 US10657897B2 (en) 2018-04-04 2018-05-07 Driving compensation circuit for OLED display unit, OLED display circuit, and OLED display

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810297520.1 2018-04-04
CN201810297520.1A CN108231000B (en) 2018-04-04 2018-04-04 OLED display unit driving compensation circuit, OLED display circuit and OLED display

Publications (1)

Publication Number Publication Date
WO2019192049A1 true WO2019192049A1 (en) 2019-10-10

Family

ID=62657527

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/085905 WO2019192049A1 (en) 2018-04-04 2018-05-07 Drive compensation circuit of oled display unit, oled display circuit and oled display

Country Status (2)

Country Link
CN (1) CN108231000B (en)
WO (1) WO2019192049A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114612437A (en) * 2022-03-15 2022-06-10 广州康盛网络科技有限公司 AMOLED-based display image quality improving method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109872691B (en) * 2019-03-29 2024-01-02 北京集创北方科技股份有限公司 Driving compensation method, compensation circuit, display panel and display device thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106057130A (en) * 2016-08-18 2016-10-26 上海天马有机发光显示技术有限公司 Display panel and compensation method of display panel
CN205751477U (en) * 2016-05-12 2016-11-30 上海锦荃电子科技有限公司 The pixel-driving circuit of OLED
US20170018222A1 (en) * 2015-07-15 2017-01-19 Samsung Display Co., Ltd. Organic light emitting display device
CN106409260A (en) * 2016-11-17 2017-02-15 京东方科技集团股份有限公司 Voltage compensation circuit and voltage compensation method thereof, display panel, and display apparatus
CN107452354A (en) * 2017-09-22 2017-12-08 京东方科技集团股份有限公司 A kind of GTG control circuit, display driver circuit and display device
CN107680531A (en) * 2017-11-14 2018-02-09 武汉华星光电半导体显示技术有限公司 OLED drives compensation circuit and AMOLED display panels

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101992904B1 (en) * 2012-12-21 2019-06-26 엘지디스플레이 주식회사 Organic light emitting diode display device and driving method the same
CN104036722B (en) * 2014-05-16 2016-03-23 京东方科技集团股份有限公司 Pixel unit drive circuit and driving method, display device
KR101560492B1 (en) * 2014-09-12 2015-10-15 엘지디스플레이 주식회사 Organic Light Emitting Display For Sensing Electrical Characteristics Of Driving Element
CN107039004B (en) * 2017-06-08 2019-04-30 深圳市华星光电半导体显示技术有限公司 The aging compensation approach of AMOLED display panel
CN107610643B (en) * 2017-09-29 2020-11-10 京东方科技集团股份有限公司 Compensation circuit, control method thereof, display panel and display device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170018222A1 (en) * 2015-07-15 2017-01-19 Samsung Display Co., Ltd. Organic light emitting display device
CN205751477U (en) * 2016-05-12 2016-11-30 上海锦荃电子科技有限公司 The pixel-driving circuit of OLED
CN106057130A (en) * 2016-08-18 2016-10-26 上海天马有机发光显示技术有限公司 Display panel and compensation method of display panel
CN106409260A (en) * 2016-11-17 2017-02-15 京东方科技集团股份有限公司 Voltage compensation circuit and voltage compensation method thereof, display panel, and display apparatus
CN107452354A (en) * 2017-09-22 2017-12-08 京东方科技集团股份有限公司 A kind of GTG control circuit, display driver circuit and display device
CN107680531A (en) * 2017-11-14 2018-02-09 武汉华星光电半导体显示技术有限公司 OLED drives compensation circuit and AMOLED display panels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114612437A (en) * 2022-03-15 2022-06-10 广州康盛网络科技有限公司 AMOLED-based display image quality improving method

Also Published As

Publication number Publication date
CN108231000B (en) 2020-03-17
CN108231000A (en) 2018-06-29

Similar Documents

Publication Publication Date Title
US11335257B2 (en) Display device and electronic apparatus
US10546535B2 (en) Pixel driving circuit and driving method of the same, display apparatus
US10902803B2 (en) Display panel, voltage adjustment method thereof, and display device
EP3142100B1 (en) Pixel drive circuit and drive method therefor, and display device
US11176885B2 (en) Display device, method for driving display device, and electronic device
US20160203761A1 (en) Pixel circuit, organic electroluminescent display panel and display apparatus
US20140118231A1 (en) Pixel Driving Circuit And Method, Array Substrate, And Display Apparatus
US20190180693A1 (en) Data Driver and Organic Light-Emitting Display Device Using the Same
US10636378B2 (en) Scan signal compensating method based on reference thin film transistors, and scan signal compensating circuit and display device associated therewith
US7355581B2 (en) Analog buffer circuit for liquid crystal display device
WO2017012155A1 (en) Voltage compensation circuit and voltage compensation method based on voltage compensation circuit
US11735112B2 (en) Display device, method for driving display device, and electronic device
US9536467B2 (en) Display device
US11532267B2 (en) Pixel driving circuit with light-emitting control sub-circuit and display control sub-circuit and driving method therefor, display panel and display apparatus
WO2019192049A1 (en) Drive compensation circuit of oled display unit, oled display circuit and oled display
US10510297B2 (en) Pixel circuit, driving method thereof, display panel and display device
KR20200025091A (en) Gate driver, organic light emitting display apparatus and driving method thereof
WO2018047492A1 (en) Display device and electronic instrument
WO2018173494A1 (en) Display device
US20120293397A1 (en) Bootstrap circuit, inverter circuit, scanning circuit, display device, and electronic apparatus
JP2014107001A (en) Shift register circuit and picture display unit
US10803822B2 (en) Pixel drive circuit of display panel and display device
US10657897B2 (en) Driving compensation circuit for OLED display unit, OLED display circuit, and OLED display
US10127870B2 (en) Liquid crystal display having two equal common voltages at two opposite sides
JPS63175890A (en) Driving of active matrix type liquid crystal panel

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18913865

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18913865

Country of ref document: EP

Kind code of ref document: A1